Photronics (PLAB) Q4 Earnings and Revenues Surpass Estimates Posted byZacks Equity Research December 8, 2021 Leave a comment on Photronics (PLAB) Q4 Earnings and Revenues Surpass Estimates Photronics (PLAB) delivered earnings and revenue surprises of 32% and 3.59%, respectively, for the quarter ended October 2021. Do the numbers hold clues to what lies ahead for the stock?